Intertidal Habitat Survey Method Based on UAV Aerial Photography

Abstract

The invention relates to an intertidal zone habitat survey method based on unmanned aerial vehicle aerial photography. The method comprises the steps that an unmanned aerial vehicle low-altitude aircraft is adopted as a remote sensing platform, needs to carry a digital camera, and integrates a GPS and a gyroscope module; a tidal table of a surveyed intertidal zone region is inquired; executable time periods of unmanned aerial vehicle aerial photography are determined according to high and low tide levels and tide time of a spring tide period; flight numbers and air lines of the aerial photography and control points needing to be arranged are planned; arrangement of the control points, measurement and aerial flight photography are completed; aerial photography images are processed, exposure adjusting, image splicing and geometric correcting are involved in processing, and therefore a high-resolution image of the whole survey range can be formed; speckle extracting and spatial formation ecological parameter calculating are carried out on specific type of the intertidal zone habitat. The method overcomes the defect of an existing intertidal biology survey method or a traditional topographic survey method, obtains spatial framework information of the intertidal habitat, and provides the basis for evaluating the ecological function and the ecological value of the inter-tidal habitat.

Description

technical field [0001] The invention relates to the fields of remote sensing information technology and ecological environment assessment, in particular to an intertidal zone habitat investigation method based on unmanned aerial vehicle photography. Background technique [0002] The intertidal zone refers to the coast between the highest tide level of the spring tide period and the lowest tide level of the spring tide period, that is, the range from the submerged place when the sea water rises to the highest level to the surface when the tide recedes to the lowest level. The intertidal zone is the link between ocean and land. In marine ecology, the intertidal zone is a special habitat. The intertidal zone is affected by the alternation of seawater high tide and low tide, and the environment changes greatly, forming a unique biological habitat and nurturing special intertidal zone organisms, which has important ecological significance and functions. In the estuary, the inte...

AI Technical Summary

Problems solved by technology

The method of on-site biological survey is time-consuming and labor-intensive. Although the biological data at the sampling point can be obtained, it is difficult to accurately determine the habitat range of the intertidal zone as a whole; the traditional intertidal topographic survey requires manual beach surveys, and the workload is heavy And the construction period is long, and the measured parameters are only elevation information

Satellite remote sensing can quickly and large-scale simultaneous monitoring of land surface environmental changes, but limited by the spatial resolution of current satellite sensor imaging and the time of satellite transit imaging, the monitoring of intertidal zone terrain is limited to a large spatial scale, which cannot meet local A fine-scale survey of intertidal habitats

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